[INFO] cloning repository https://github.com/emilyzhang/netlichat [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/emilyzhang/netlichat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femilyzhang%2Fnetlichat", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femilyzhang%2Fnetlichat'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] db21c88a36c096ec93dd4db5613d813bdeb4307f [INFO] checking emilyzhang/netlichat against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femilyzhang%2Fnetlichat" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/emilyzhang/netlichat on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/emilyzhang/netlichat [INFO] finished tweaking git repo https://github.com/emilyzhang/netlichat [INFO] tweaked toml for git repo https://github.com/emilyzhang/netlichat written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/emilyzhang/netlichat already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded tokio v1.3.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a96a9b3337977b84eb3b5f2f74771b338a0dab001c7fa2b7a45d24e9122843d2 [INFO] running `Command { std: "docker" "start" "-a" "a96a9b3337977b84eb3b5f2f74771b338a0dab001c7fa2b7a45d24e9122843d2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a96a9b3337977b84eb3b5f2f74771b338a0dab001c7fa2b7a45d24e9122843d2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a96a9b3337977b84eb3b5f2f74771b338a0dab001c7fa2b7a45d24e9122843d2", kill_on_drop: false }` [INFO] [stdout] a96a9b3337977b84eb3b5f2f74771b338a0dab001c7fa2b7a45d24e9122843d2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7db6ed02f0766c8e3604493c9379ef994d70a15eff59bd00bccb19ab209a295c [INFO] running `Command { std: "docker" "start" "-a" "7db6ed02f0766c8e3604493c9379ef994d70a15eff59bd00bccb19ab209a295c", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.88 [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling syn v1.0.63 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Checking smallvec v1.6.1 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Checking scopeguard v1.1.0 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Checking pin-project-lite v0.2.6 [INFO] [stderr] Checking bytes v1.0.1 [INFO] [stderr] Checking once_cell v1.7.2 [INFO] [stderr] Checking instant v0.1.9 [INFO] [stderr] Checking lock_api v0.4.2 [INFO] [stderr] Compiling tokio v1.3.0 [INFO] [stderr] Checking parking_lot_core v0.8.3 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking mio v0.7.9 [INFO] [stderr] Checking signal-hook-registry v1.3.0 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking parking_lot v0.11.1 [INFO] [stderr] Compiling tokio-macros v1.1.0 [INFO] [stderr] Checking netlichat v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `sync::Arc` [INFO] [stdout] --> src/main.rs:1:11 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{sync::Arc, time::Duration}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Mutex`, `TcpStream` [INFO] [stdout] --> src/main.rs:5:24 [INFO] [stdout] | [INFO] [stdout] 5 | net::{TcpListener, TcpStream}, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 9 | Mutex, [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `sync::Arc` [INFO] [stdout] --> src/main.rs:1:11 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{sync::Arc, time::Duration}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Mutex`, `TcpStream` [INFO] [stdout] --> src/main.rs:5:24 [INFO] [stdout] | [INFO] [stdout] 5 | net::{TcpListener, TcpStream}, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 9 | Mutex, [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:26:9 [INFO] [stdout] | [INFO] [stdout] 26 | stream.write_all(input.as_bytes()).await; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 26 | let _ = stream.write_all(input.as_bytes()).await; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:26:9 [INFO] [stdout] | [INFO] [stdout] 26 | stream.write_all(input.as_bytes()).await; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 26 | let _ = stream.write_all(input.as_bytes()).await; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.19s [INFO] running `Command { std: "docker" "inspect" "7db6ed02f0766c8e3604493c9379ef994d70a15eff59bd00bccb19ab209a295c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7db6ed02f0766c8e3604493c9379ef994d70a15eff59bd00bccb19ab209a295c", kill_on_drop: false }` [INFO] [stdout] 7db6ed02f0766c8e3604493c9379ef994d70a15eff59bd00bccb19ab209a295c [INFO] checking emilyzhang/netlichat against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femilyzhang%2Fnetlichat" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/emilyzhang/netlichat on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/emilyzhang/netlichat [INFO] finished tweaking git repo https://github.com/emilyzhang/netlichat [INFO] tweaked toml for git repo https://github.com/emilyzhang/netlichat written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/emilyzhang/netlichat already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 44c66570e26e6d277e5a6e57087bb0d2ea1edeae42ac9e2083e1cb2a319d4683 [INFO] running `Command { std: "docker" "start" "-a" "44c66570e26e6d277e5a6e57087bb0d2ea1edeae42ac9e2083e1cb2a319d4683", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "44c66570e26e6d277e5a6e57087bb0d2ea1edeae42ac9e2083e1cb2a319d4683", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "44c66570e26e6d277e5a6e57087bb0d2ea1edeae42ac9e2083e1cb2a319d4683", kill_on_drop: false }` [INFO] [stdout] 44c66570e26e6d277e5a6e57087bb0d2ea1edeae42ac9e2083e1cb2a319d4683 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b6b174808d9c918586e81cfd2acb35edfe19ecedb49c85168226808a31f5842b [INFO] running `Command { std: "docker" "start" "-a" "b6b174808d9c918586e81cfd2acb35edfe19ecedb49c85168226808a31f5842b", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.88 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling syn v1.0.63 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Checking scopeguard v1.1.0 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Checking smallvec v1.6.1 [INFO] [stderr] Checking pin-project-lite v0.2.6 [INFO] [stderr] Checking bytes v1.0.1 [INFO] [stderr] Checking once_cell v1.7.2 [INFO] [stderr] Checking instant v0.1.9 [INFO] [stderr] Checking lock_api v0.4.2 [INFO] [stderr] Compiling tokio v1.3.0 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking parking_lot_core v0.8.3 [INFO] [stderr] Checking mio v0.7.9 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking signal-hook-registry v1.3.0 [INFO] [stderr] Checking parking_lot v0.11.1 [INFO] [stderr] Compiling tokio-macros v1.1.0 [INFO] [stderr] Checking netlichat v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `sync::Arc` [INFO] [stdout] --> src/main.rs:1:11 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{sync::Arc, time::Duration}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Mutex`, `TcpStream` [INFO] [stdout] --> src/main.rs:5:24 [INFO] [stdout] | [INFO] [stdout] 5 | net::{TcpListener, TcpStream}, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 9 | Mutex, [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `sync::Arc` [INFO] [stdout] --> src/main.rs:1:11 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{sync::Arc, time::Duration}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Mutex`, `TcpStream` [INFO] [stdout] --> src/main.rs:5:24 [INFO] [stdout] | [INFO] [stdout] 5 | net::{TcpListener, TcpStream}, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 9 | Mutex, [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:26:9 [INFO] [stdout] | [INFO] [stdout] 26 | stream.write_all(input.as_bytes()).await; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 26 | let _ = stream.write_all(input.as_bytes()).await; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:26:9 [INFO] [stdout] | [INFO] [stdout] 26 | stream.write_all(input.as_bytes()).await; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 26 | let _ = stream.write_all(input.as_bytes()).await; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.77s [INFO] running `Command { std: "docker" "inspect" "b6b174808d9c918586e81cfd2acb35edfe19ecedb49c85168226808a31f5842b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b6b174808d9c918586e81cfd2acb35edfe19ecedb49c85168226808a31f5842b", kill_on_drop: false }` [INFO] [stdout] b6b174808d9c918586e81cfd2acb35edfe19ecedb49c85168226808a31f5842b